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Home >> Mazda >> 2018 >> CX-9 Touring, AWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical System >> Timing Chain Removal/Installation >> Cylinder Head Cover Removal Note

Cylinder Head Cover Removal Note

  1. Disconnect the connectors and clips shown in the figure and set the wiring harness aside.
    Fig 1: Purge Solenoid Valve Connector, Solenoid Valve Connector And Wiring Harness Clips
    G12244091Courtesy of MAZDA MOTORS CORP.
    COMPONENT DESCRIPTION

    1 Wiring harness clip
    2 Wiring harness clip
    3 Wiring harness clip
    4 Wiring harness clip
    5 Purge solenoid valve connector
    6 Solenoid valve connector
    7 Wiring harness clip
  2. Disconnect the hoses shown in the figure and remove the purge solenoid bracket component.
    Fig 2: Locating Hoses And Purge Solenoid Bracket Component
    G11436793Courtesy of MAZDA MOTORS CORP.
  3. Remove the bolts shown in the figure and remove the bracket.
    Fig 3: Bracket, Cylinder Head Cover And Bolts With Torque Specification
    G11436794Courtesy of MAZDA MOTORS CORP.
  4. Remove the bolts and clips shown in the figure and remove the wiring harness bracket.
    Fig 4: Wiring Harness Bracket, Wiring Harness Clips And Bolts With Torque Specification
    G12244094Courtesy of MAZDA MOTORS CORP.
    COMPONENT DESCRIPTION

    1 Wiring harness clip
    2 Bolt
    3 Wiring harness clip
    4 Bolt
    5 Wiring harness clip
    6 Wiring harness bracket
  5. Set the engine wiring harness aside using the following procedure:
    1. Disconnect or remove the following parts.

      Step 1 

      Fig 5: OCV Connector And Wiring Harness Clips
      G12244095Courtesy of MAZDA MOTORS CORP.
      COMPONENT DESCRIPTION

      1 Wiring harness clip
      2 OCV connector
      3 Wiring harness clip
      4 Wiring harness clip
      5 Wiring harness clip

      Step 2 

      Fig 6: Connectors, Wiring Harness Clip And Bolts With Torque Specification
      G12244096Courtesy of MAZDA MOTORS CORP.
      COMPONENT DESCRIPTION

      1 Wiring harness clip
      2 Fuel pressure sensor connector
      3 High pressure fuel pump connector
      4 Bolt
      5 Camshaft position (CMP) sensor connector
      6 Wiring harness clip
    2. Set the engine wiring harness in a place which does not interfere with the servicing.
  6. Disconnect the hoses shown in the figure and remove the vacuum pipe component.
    Fig 7: Disconnecting Hoses And Bolts With Torque Specifications
    G11436798Courtesy of MAZDA MOTORS CORP.
  7. Disconnect the vacuum hose.
    Fig 8: Vacuum Hose And Clip
    G11436799Courtesy of MAZDA MOTORS CORP.
  8. Disconnect the hose shown in the figure and set the air pipe component aside with the water hose still connected.
    Fig 9: Air Pipe Component, Clip And Bolt With Torque Specification
    G11436800Courtesy of MAZDA MOTORS CORP.
  9. Remove the bolt shown in the figure and remove the wiring harness bracket.
    Fig 10: Wiring Harness Bracket And Bolt With Torque Specification
    G11436801Courtesy of MAZDA MOTORS CORP.
  10. Remove the air inlet pipe. (U.S.A. and CANADA) (See Intake-Air System Removal/Installation .)
  11. Disconnect the air intake hose shown in the figure. (U.S.A. and CANADA)
    Fig 11: Air Intake Hose, Hose Clamp And Cylinder Head Cover (USA And CANADA)
    G11436802Courtesy of MAZDA MOTORS CORP.
  12. Disconnect the breather hose shown in the figure. (Except U.S.A. and CANADA)
    Fig 12: Breather Hose, Cylinder Head Cover And Clip
    G11436803Courtesy of MAZDA MOTORS CORP.
  13. Remove the cylinder head cover.